Abstract
The electrical properties of an epoxy resin system for use as machine insulation containing either ZnO or Al2O3 fillers have been investigated. The fillers impart non-linear current-voltage characteristics to the materials. The electrical conductivities of plaques of epoxy containing filler were a function of the applied electric field strength. The current-voltage relationship was dependent on the filler and differed from that for the unfilled material. The current transient as a result of an applied DC step voltage depended on the filler type and applied field strength. Multi-layer, plaque samples of mica-paper, glass-cloth and epoxy resin, with and without ZnO filler, were examined electrically. Current transient measurements allowed the estimation of the dielectric loss from ~10-5-10-1 Hz. Global thermally stimulated depolarisation current (TSDC) spectra were obtained. Partial polarisation spectra at 5°C intervals were also obtained from 35-150°C for unfilled and 20% ZnO filled samples. The spectra showed significant differences between sample types
| Original language | English |
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| Title of host publication | Proceedings of the 2001 IEEE 7th International Conference on Solid Dielectrics |
| Subtitle of host publication | ICSD '01 |
| Publisher | IEEE |
| Pages | 125-128 |
| Number of pages | 4 |
| ISBN (Print) | 0-7803-6352-3 |
| DOIs | |
| Publication status | Published - Jun 2001 |
| Event | IEEE 7th International Conference on Solid Dielectrics, 2001. ICSD '01 - Eindhoven, Netherlands Duration: 25 Jun 2001 → 29 Jun 2001 |
Conference
| Conference | IEEE 7th International Conference on Solid Dielectrics, 2001. ICSD '01 |
|---|---|
| Country/Territory | Netherlands |
| City | Eindhoven |
| Period | 25/06/01 → 29/06/01 |
Keywords
- dielectric losses
- dielectric polarisation
- epoxy insulation
- filled polymers